Mine have come down with dry fowl pox too. Seems all mine have it to some extent.From research I've done there is a vaccine but you shouldn't give it to already sick birds. You can vaccinate all birds not showing symptoms. The major danger is from secondary infections. Plenty of greens, antibiotics and electrolytes to help them fight off any other infections is the best course of action along with the iodine on the actual sores. My question is if you do give antibiotics can you use the eggs and if not for how long?